Less than two months after the singer announced she was teaming up with the soft drink giant, we have an exclusive, behind-the-scenes look at Swift shooting her first Diet Coke commercial.

"I think my favorite thing about the concept for the Diet Coke TV ad that we just shot is that one of the most amazing things I get to do is watch the process of writing a song and then all the next steps that happen, resulting in someone singing it in their car, someone singing it in their bedroom," Swift says.

The 23-year-old music sensation goes on to reveal part of what that process entails.

"I write on whatever I can find," the Grammy winner explains. "I write where I am, whenever I get an idea, in the middle of the day, in the middle of the night. I like that the commercial really showcases that."

The partnership with Diet Coke will play an integral role in Swift's upcoming Red tour, which kicks off in Omaha, Neb., on March 13. Fans will be able to get unique access to all things Swift via Diet Coke's Facebook page.